The power plant of the Electrical Light Company, built in 1886, was put into operation on 16 November 1898. It was equipped with four steam boilers and six Siemens and Galske steam machines with a total capacity of 4.2 MW. The power plant became one of the three largest in St. Petersburg, along with the stations of Helios and Belgian Anonymous Society of Electric Lighting built at the time.

The Ministry of Energy of the Russian Federation issued a Certificate of Readiness for TGC-1, permitting the company to work during the 2018/19 heating season

On 12 November 2018, Evgeny Nikora, Deputy Governor of Murmansk Oblast, awarded the winners of the regional stage of the MediaTEK contest

TGC-1's interactive annual report for 2017, designed jointly with 2PR, received the gold award at MarCom Awards-2018, a prestigious international competition of design projects in the field of marketing, corporate communications, and PR

TGC-1 releases interim unaudited consolidated Financial Statements for the 9 months period, ended 30 September 2018 prepared in accordance with International Financial Reporting Standards (IFRS).

Vyborgskaya CHPP's environmental monitoring system was launched in the mode of pilot and field testing

As part of the Power System Repair and Maintenance Programme implementation, the full repair of hydroelectric generating unit No. 2 of Putkinskaya HPP was completed

TGC-1 published its 9 months 2018 financial statements under the Russian Accounting Standards (RAS).

Electricity generation of TGC-1 for 9 months of 2018, including PJSC Murmanskaya CHPP, comprised 21,555.1 million kWh, which is 3.2% more than in the respective period of 2017.

On 25 September 2018, the impeller of the hydroelectric generating unit No. 4 was dismantled as part of the upgrade of TGC-1's Verkhne-Tulomskaya HPP